OA	osteoarthritis
H2S	hydrogen sulfide
Nrf-2	nuclear factor-erythroid 2-related factor 2
PGs	prostaglandins
MMPs	metalloproteinases
COX-2	inducible isoform of cyclooxygenase
ROS	reactive oxygen species
NO	nitric oxide
iNOS	inducible NO synthase
ECM	extracellular matrix
C	group under non-treatment
CI	group treated with intraarticular injection of saline
SI	group treated with intraarticular injection of H2S donor
MTP	medial compartment from tibial plateau
MFC	medial compartment from femoral condyl
8-oxo-dG	8-Hydroxy-2′-deoxyguanosine
4-HNE	4-hidroxi-2-nonenal
Nfe2l2	nrf-2 gene
Nqo1	NADPH:quinone oxidoreductase gene
Hmox1	heme oxygenase-1 gene
Tnf	tumor necrosis factor-α gene
Ptgse	COX-2 gene
Il1b	interleukin-1β gene
Cxcl1	cytokine-induced neutrophil chemoattractant-1 gene
3-MPST	3-Mercaptopyruvate sulfurtransferase
CSE	cystathionine γ-lyase
CBS	cystathionine β-synthetase
MIA	monosodium iodoacetate
NaSH	sodium hydrosulfide
TNF-α	tumor necrosis factor-α
NF-κB	nuclear factor-κB
NQO1	NADPH:quinone oxidoreductase
HO-1	heme oxygenase-1
SEM	standard error of the mean